@inbook{57005351, author={Jeffrey M. Marks and Jeffrey L. Ponsky}, editor={Zinner, Michael J. and Ashley, Stanley W.}, title={Chapter 3. Endoscopy and Endoscopic Intervention}, booktitle={Maingot's Abdominal Operations, 12e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2013}, url={accesssurgery.mhmedical.com/content.aspx?aid=57005351} }